Falhas do tipo CWE-416

5.111 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar (ler ou escrever) um bloco de memória que já foi liberado (free, delete). O programa mantém um ponteiro para a memória, mas o sistema operacional pode reatribuir essa região para outro uso, causando corrupção de dados, travamento ou execução de código arbitrário.

Exemplo

Um servidor web aloca memória para armazenar dados de sessão do usuário, depois libera essa memória quando a sessão encerra. Se uma thread continuar tentando acessar essa sessão após a liberação, pode ler dados de outra sessão ou sobrescrever dados críticos de outro processo.

Como mitigar

Sempre anule ponteiros após liberar memória (ptr = NULL), use variáveis de controle para rastrear estado de alocação, implemente gerenciamento automático de memória quando possível (smart pointers em C++), e execute testes com sanitizers (AddressSanitizer, Valgrind) durante desenvolvimento e CI/CD.

CVE-2026-14425CRITICALUse after free in ANGLE in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2026-14424CRITICALUse after free in Dawn in Google Chrome on Mac prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via EPSS 0.3%CVE-2026-14398CRITICALUse after free in ANGLE in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via a crafEPSS 0.3%CVE-2026-13915HIGHUse after free in Chrome for iOS in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in EPSS 0.3%CVE-2026-19171CRITICALUse after free in Media in Google Chrome on Windows prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escapEPSS 0.3%CVE-2026-13789CRITICALUse after free in GPU in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentiaEPSS 0.3%CVE-2026-42007CRITICALAn attacker that has valid credentials can use a Sieve script with the editheader extension to trigger a use-after-free in the mail editing EPSS 0.3%CVE-2026-17884HIGHObject lifecycle issue in WebRTC in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially exploit heap corruption viEPSS 0.3%CVE-2026-17670CRITICALUse after free in Views in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentEPSS 0.3%CVE-2026-14394HIGHUse after free in V8 in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to potentially exploit heap corruption via a crafted EPSS 0.3%CVE-2023-48184LOWQuickJS before 7414e5f has a quickjs.h JS_FreeValueRT use-after-free because of incorrect garbage collection of async functions with closureEPSS 0.3%CVE-2026-3923HIGHUse after free in WebMIDI in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a craEPSS 0.3%CVE-2026-19149CRITICALUse after free in Aura in Google Chrome on Linux prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escape vEPSS 0.3%CVE-2026-15904HIGHUse after free in Ozone in Google Chrome on Linux prior to 150.0.7871.128 allowed a remote attacker who convinced a user to engage in specifEPSS 0.3%CVE-2026-13869CRITICALUse after free in Device in Google Chrome on Windows prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer proceEPSS 0.3%CVE-2024-25443HIGHAn issue in the HuginBase::ImageVariable<double>::linkWith function of Hugin v2022.0.0 allows attackers to cause a heap-use-after-free via pEPSS 0.3%CVE-2026-6919CRITICALUse after free in DevTools in Google Chrome prior to 147.0.7727.117 allowed a remote attacker who had compromised the renderer process to poEPSS 0.3%CVE-2026-17784HIGHUse after free in Audio in Google Chrome on Mac prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process toEPSS 0.3%CVE-2026-16424CRITICALUse after free in GPU in Google Chrome on Android prior to 150.0.7871.182 allowed a remote attacker who had compromised the renderer processEPSS 0.3%CVE-2022-49111HIGHBluetooth: Fix use after free in hci_send_aclEPSS 0.3%